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Related to antiknock: antiperspirant
A substance, such as tetraethyl lead, added to gasoline to reduce engine knock.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
(Automotive Engineering) a compound, such as lead tetraethyl, added to petrol to reduce knocking in the engine
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
an•ti•knock(ˌæn tiˈnɒk, ˌæn taɪ-)
of, pertaining to, or being a material added to fuel for an internal-combustion engine to eliminate or minimize knock.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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|Noun||1.||antiknock - any of various compounds that are added to gasoline to reduce engine knocking|
lead tetraethyl, tetraethyl lead - a clear oily poisonous liquid added to gasoline to prevent knocking
|Adj.||1.||antiknock - suppressing or eliminating engine knock in combustion engines; "antiknock properties"; "antiknock rating"|
leaded - treated or mixed with lead; "leaded gasoline"; "leaded zinc"
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.